Kinetic Modelling of Bioremediation of Water Contaminated With Bonny Light Crude Oil Using Biostimulation-Bioaugmentation Agent
Journal Title: Universal Journal of Environmental Research and Technology - Year 2015, Vol 5, Issue 4
Abstract
The objective of this study was to investigate the potential use of cassava steep liquor (CSL) alone and in combination with potassium phosphate and ammonium sulphate (inorganic nutrients) as biostimulationbioaugmentation agent in the bioremediation of crude oil contaminated waters. Bioremediation was carried out for six weeks at ambient temperature in plastic bucket bioreactors containing water artificially contaminated with 10% (v/v) Bonny light crude oil. CSL alone and in combination with potassium phosphate and/or ammonium sulphate was added to each bioreactor. Similar contaminated water without CSL and potassium phosphate/ammonium addition served as control designated as natural bioattenuation. The results revealed that natural bioattenuation, CSL supplementation, CSL + potassium phosphate, CSL + ammonium sulphate, and combined CSL + potassium + ammonium sulphate remediation systems elicited 40%, 58.5%, 67.7%, 64.1% and 77.4% total petroleum hydrocarbon degradation and a corresponding biochemical oxygen demand (BOD) reduction of 52%, 62.7%, 71%, 66.7% and 81.7%, respectively. The microbial load in the contaminated water increased rapidly between days 0 and 7 and decreased between days 14 and 42 in all the remediation systems. A first-order kinetic model fitted well to the biodegradation data and the corresponding half-life time was also estimated. The model revealed that crude oil contaminated water under combined CSL + potassium + ammonium sulphate treatment strategy had higher biodegradation rate constants, k as well as lower half-life times, t 2/1 than other remediation systems. Thus, the results suggest that CSL and in combination with inorganic nutrient could be an indispensable tool in bioremediation of petroleum hydrocarbons contaminated environment.
Authors and Affiliations
Latinwo G. K. and Agarry S. E.
Keywords
Related Articles
- EP ID EP31924
- DOI -
- Views 331
- Downloads 1
Dyeing and Medicinal Plants Used in the Area of Mouhoun in Burkina Faso
Although there is great investment in natural dyes, there are few scientific data on the traditional knowledge of their biological activities by the African people. This study investigates the nutraceutical and medicina...
Sorption Ability of Modified Fruit Nut Shells in the Removal of Co (II) ions from Aqueous Solutions
The present work deals with the efficiency of modified Terminalia catappa seed shell (TCSS), an agricultural waste, for the removal of Co(II) from aqueous solutions. Three methods of modifications of the sorbent materi...
Assessment of Water Quality Index of River Godavari at Rajahmundry
Assembling different water quality parameters into one single number leads an easy interpretation of an index, thus providing an important tool for management and decision making purposes. Water Quality Index exhibits...
Forest Resource Accounting: An Overview and Indian Perspective
Forest Resource accounting is a debated issue. With the fast-growing economy in India, the growing pressure and increasing awareness for environmental protection requires deep understanding of the interactions between...
Noise Levels in Dussehara at Mahewa, Allahabad, Uttar Pradesh
The present research focused on noise level monitoring during pre dussehara, post and during dussehara day’s at Mahewa, Naini Allahabad. The variation of noise levels L10, L90 and Leq were observed during pre dussehara...